Wilted Spinach Salad with Warm Bacon Dressing

Place eggs in medium saucepan, cover with 1 inch of water, and bring to boil over high heat. Remove pan from heat, cover, and let stand 10 minutes. Meanwhile, fill medium bowl with 1 quart ice water. Transfer eggs to ice water with slotted spoon; let stand 5 minutes, then peel eggs, quarter them lengthwise, and set aside.

Place spinach in large bowl. Stir vinegar, sugar, pepper, and salt together in small bowl until sugar dissolves; set aside.

Fry bacon in medium skillet over medium-high heat, stirring occasionally, until crisp, about 10 minutes. Using slotted spoon, transfer bacon to paper towel–lined plate. Pour bacon fat into heatproof bowl, then return 3 tablespoons bacon fat to skillet. Add onion to skillet and cook over medium heat, stirring frequently, until slightly softened, about 3 minutes; stir in garlic until fragrant, about 15 seconds. Add vinegar mixture, then remove skillet from heat; working quickly, scrape bottom of skillet with wooden spoon to loosen browned bits. Pour hot dressing over spinach, add bacon, and toss gently with tongs until spinach is slightly wilted. Divide among individual plates, arrange egg quarters over each, and serve.